Wuxi Daoxin Technology Co., Ltd.
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The DX-DO3000 Digital Dissolved Oxygen Meter from Wuxi Daoxin Technology Co., Ltd. offers a reliable, low-maintenance solution for continuous DO monitoring in a wide variety of water treatment and industrial environments. Designed with flexibility in mind, the system supports both fluorescence-based optical sensors and traditional membrane-type probes, catering to diverse customer needs.
The optical version of the sensor features an advanced luminescent principle that requires no membrane or electrolyte, significantly reducing maintenance and eliminating signal drift. It is resistant to contamination and features a typical lifespan of over two years. For applications preferring electrochemical methods, a polarographic membrane version is available, featuring replaceable diaphragms and regular electrolyte service.
With a measurement accuracy of ±1% FS or ±0.1 mg/L, and a quick response time of ≤10 seconds, the DX-DO3000 delivers dependable performance even under dynamic flow conditions. The system’s 4-20mA and RS485 Modbus RTU outputs make it ideal for integration into modern monitoring systems and remote SCADA networks.
| Flow Velocity | ≥ 0.2 M/s (flow Required For Membrane Method; Still Water Available For Fluorescence Method) |
| Temperature Compensation Range | 0 ～ 80 ℃ (Automatic Or Manual Compensation) |
| Sensor Type | Fluorescence Method: No Membrane, Resistant To Contamination; Membrane Method: Replaceable Diaphragm (electrolyte Required) |
| Sensor Lifespan | Fluorescence Method: ≥ 2 Years (no Membrane Loss); Membrane Method: 6 To 12 Months (requires Regular Maintenance) |
| Operating Temperature | -10 ～ 60 ℃ |
| Signal Output | 4-20mA, RS485 (Modbus RTU) |
| Measurement Accuracy | ±1% FS Or ±0.1 Mg/L |
| Resolution | 0.01 Mg/L |
| Alarm Function | Hi/Low Alarm / Relay Output |
| Response Time | ≤ 10s (Seconds) |
The DX-DO3000 is an essential instrument in modern wastewater treatment plants, where accurate dissolved oxygen control directly affects biological treatment efficiency and energy consumption. It enables precise aeration control in SBR, MBR, and oxidation ditch systems, improving overall process stability.
In the aquaculture industry, the DX-DO3000 supports critical oxygen management in fish ponds and recirculating aquaculture systems (RAS), where stable oxygen levels are vital for fish health and feed conversion efficiency.
Additionally, the analyzer is widely used in pharmaceutical fermentation tanks and bioreactors, where oxygen concentration must be tightly regulated to maintain metabolic activity. It also finds application in river and lake oxygenation studies, drinking water plant intake monitoring, and marine environmental research.
The versatility of the DX-DO3000, including support for still or flowing water environments, makes it an ideal choice for both stationary and mobile monitoring platforms.
Wuxi Daoxin Technology ensures the long-term reliability of your dissolved oxygen monitoring system by offering comprehensive support services. From sensor selection to installation and calibration, our specialists work closely with your team to ensure optimal performance in the field.
All products come with user-friendly documentation, including quick start guides, calibration procedures, and troubleshooting flowcharts. For optical sensors, maintenance is minimal, with recommended membrane cleaning intervals provided to maintain peak accuracy.
We maintain a full inventory of accessories and spare parts, including sensor caps, protective cages, calibration kits, and extension cables. Optional add-ons such as automatic cleaning devices and anti-fouling kits are available for more challenging environments.
Remote software support, firmware updates, and system optimization services are also provided, ensuring that your DO monitoring system remains up-to-date and reliable.